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Monolithic Power Systems Inc. MP8904DD-LF-P
- Part No.:
- MP8904DD-LF-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-TFDFN Exposed Pad
- Datasheet:
-
MP8904DD-LF-P.pdf
- Description:
- IC REG LINEAR POS ADJ 500MA 8QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,414
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Product details
Overview
MP8904DD-LF-P from Monolithic Power Systems is a 500mA adjustable-output low-dropout linear regulator with 2.5V–6.5V input range, 0.5V–5V output voltage set via external resistor divider, 300mV dropout at full load, and integrated power-good open-collector output. It serves as a precision low-quiescent-current voltage source in battery-powered mobile devices.
For engineers reviewing the MP8904DD-LF-P datasheet, MP8904DD-LF-P pinout, MP8904DD-LF-P application, or MP8904DD-LF-P equivalent, key selection criteria include its 0.5V feedback reference accuracy, 100μA ground current at light load, thermal/current protection behavior, and QFN8 (2×3mm) package compatibility with space-constrained PCB layouts.
Technical Context
The MP8904DD-LF-P uses a PNP pass transistor architecture to achieve low dropout and stable operation with ceramic capacitors as small as 2.2μF on input and 4.7μF on output. Its internal 0.496V ±1.5% feedback reference enables precise output setting across temperature.
It integrates dual protection mechanisms: foldback current limiting (550–730mA trip) and thermal shutdown at 155°C, with automatic recovery. The open-drain PG pin asserts low when output falls >10% below regulation, supporting system-level power sequencing and fault monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 500mA max continuous - supports single-rail power for baseband processors or RF front-ends |
| Dropout Voltage | 300mV at 500mA - enables 1.8V output from 2.1V input, critical for Li-ion battery discharge tail |
| Feedback Reference | 0.496V ±1.5% - sets output accuracy to ±2% over temperature with standard 1% resistors |
| Quiescent Current | 100μA typical at 1mA load - extends battery life in always-on sensor nodes |
| Shutdown Current | 6μA typical - ensures negligible drain during deep sleep modes |
| Line Regulation | 0.005%/V - maintains tight output stability across wide input voltage swings |
| Load Regulation | Better than 0.001%/mA - minimizes output shift under dynamic load transients |
Pinout & Package
The MP8904DD-LF-P is housed in an 8-pin QFN package (2mm × 3mm, 0.5mm pitch) with exposed thermal pad connected to GND. This compact thermally enhanced package supports high-power-density designs and requires controlled-impedance land pattern per JEDEC MO-229 VCED-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Regulated output node | Must be bypassed with ≥4.7μF low-ESR ceramic capacitor; connects directly to load |
| 2 NC | No connect | Internally unconnected; must remain floating or grounded per layout best practice |
| 3 PG | Power-good open collector | Sinks current when VOUT drops >10% below target; requires external pull-up to 0–5.5V rail |
| 4 FB | Feedback input | Monitors voltage divider output; 0.496V threshold sets VOUT = 0.496 × (1 + R1/R2) |
| 5 EN | Enable control input | Active-high logic: >1.2V enables regulator; <0.4V forces shutdown with 6μA IQ |
| 6 GND | Analog and power ground | Primary return path; must tie to exposed pad and system ground plane for thermal and noise integrity |
| 7 NC | No connect | Internally unconnected; no routing or soldering required |
| 8 IN | Input supply connection | Accepts 2.5–6.5V; requires ≥2.2μF ceramic bypass close to pin for transient immunity |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output voltage | 0.5V to 5V via external resistor divider - enables reuse across multiple rail voltages without BOM proliferation |
| Stability with small ceramics | Works with ≥2.2μF input and ≥4.7μF output ceramic caps - eliminates need for bulky tantalum or electrolytic capacitors |
| Low ground current | 100μA at 1mA load - reduces system-level quiescent power in always-on subsystems |
| Integrated protection | Thermal shutdown at 155°C and current limit 550–730mA - prevents damage during overload or ambient rise |
| Power-good signaling | Open-drain PG output with 10% tolerance window - enables reliable power sequencing in multi-rail systems |
Applications
| Mobile Baseband Power | GPS Receiver Core Supply |
|---|---|
|
Use Scenario: Powers ARM Cortex-M4 core in portable GPS tracker operating from single-cell Li-ion (2.8–4.2V). IC Role / Device Role / Timing Role: Primary low-noise 1.8V LDO supplying processor core with fast load transient response. Use Value: 300mV dropout allows >1.8V output down to 2.1V input, extending usable battery capacity by ~12% versus higher-dropout alternatives. |
Use Scenario: Supplies 3.3V analog front-end of GNSS receiver IC in automotive telematics unit. IC Role / Device Role / Timing Role: Clean, low-ripple bias source for RF LNA and ADC reference, synchronized via EN to host MCU wake signal. Use Value: 0.001%/mA load regulation ensures <3.3μV output shift across 10–300mA dynamic current, preserving SNR in weak-signal acquisition. |
| Wireless Modem Standby Rail | IoT Sensor Node VDD |
|
Use Scenario: Provides 2.5V standby voltage to LTE-M modem during deep-sleep mode (10μA average current). IC Role / Device Role / Timing Role: Always-on LDO enabling rapid modem wake from shutdown via EN pin assertion. Use Value: 6μA shutdown current reduces annual standby drain to <0.053mAh, enabling 10-year battery life with 500mAh coin cell. |
Use Scenario: Delivers 1.2V to ultra-low-power environmental sensor ASIC in battery-operated smart agriculture node. IC Role / Device Role / Timing Role: Precision-adjustable rail with PG monitoring to validate sensor power integrity before data sampling. Use Value: 0.496V ±1.5% reference enables 1.2V output accuracy within ±25mV, meeting sensor ADC reference tolerance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B182MR-G | Fixed 1.8V output; 300mA rating; 150mV dropout at 300mA; no PG or EN pin | Lacks adjustability and system monitoring features; suitable only for static 1.8V rails | Select when output voltage is fixed and board space is constrained - smaller SOT-25 footprint but no design flexibility |
| Diodes Inc. AP2210K-3.3TRG1 | Fixed 3.3V output; 500mA rating; 350mV dropout at 500mA; includes EN but no PG | Higher dropout limits usable input range; missing PG removes fault detection capability | Choose for cost-sensitive 3.3V-only applications where thermal margin is sufficient and sequencing is handled externally |
Compared with XC6219B182MR-G and AP2210K-3.3TRG1, the MP8904DD-LF-P uniquely combines adjustable output, integrated PG monitoring, and sub-300mV dropout in a thermally optimized QFN8 package-enabling single-part support for multiple voltage rails and robust power sequencing in compact battery-powered systems.
Availability
MP8904DD-LF-P is available at Aetrix Electronics and suitable for mobile device power management, GPS navigation units, wireless modem subsystems, and IoT sensor nodes requiring stable component supply with guaranteed long-term availability.
Supply support for MP8904DD-LF-P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MP8904 belongs to MPS's low-quiescent-current LDO product line, engineered specifically for battery-powered portable electronics demanding high efficiency, small size, and reliable protection in thermally limited environments.
FAQ
What is the minimum input voltage required to maintain regulation at 500mA output current?
The MP8904DD-LF-P requires VIN ≥ VOUT + 0.3V to sustain 500mA output due to its 300mV dropout specification. For example, delivering 3.3V at 500mA demands VIN ≥ 3.6V. Below this differential, output voltage collapses proportionally with input reduction.
Can the PG pin drive a microcontroller GPIO directly without external components?
No - the PG pin is an open-collector NPN output requiring an external pull-up resistor (typically 10kΩ to 3.3V or 5V). Direct connection to a GPIO without pull-up results in undefined logic level; incorrect termination may cause false fault detection or latch-up risk.
How does the feedback reference voltage change over temperature?
The FB reference is 0.496V ±1.5% from –40°C to +85°C, measured as 0.481V to 0.510V. At +125°C maximum junction temperature, it drifts to 0.484V–0.508V. This 2% total variation defines output accuracy when using 1% feedback resistors.
Is the exposed thermal pad electrically isolated or must it be connected to GND?
The exposed pad is internally connected to GND and must be soldered to a dedicated GND copper pour. Leaving it unconnected degrades thermal resistance by >30°C/W and risks thermal shutdown under 300mA+ loads; improper grounding also increases output noise.
What happens during short-circuit events at the output?
Under sustained short-circuit, the MP8904DD-LF-P activates foldback current limiting (trip point 550–730mA), reducing output current to ~200mA while maintaining thermal shutdown at 155°C. Recovery occurs automatically once fault is removed and die temperature falls below hysteresis threshold.
Does the EN pin have internal pull-down or require external biasing?
The EN pin has no internal pull-down; it must be actively driven above 1.2V to enable or below 0.4V to disable. Floating EN causes undefined operation - recommended practice is to tie EN to VIN through a 100kΩ resistor for default-on behavior or to MCU-controlled GPIO for sequenced startup.
Can the MP8904DD-LF-P operate with input voltage below 2.5V?
No - the absolute minimum input voltage is 2.5V per datasheet specifications. Operation below this violates recommended conditions and may result in unstable regulation, increased dropout, or failure to start up. Input undervoltage lockout is not implemented.
MP8904DD-LF-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-TFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.3V @ 500mA (Typ)
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 5 mA
- PSRR:
- -
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-QFN (2x3)
MP8904DD-LF-P FAQ
1.How can I place an order for MP8904DD-LF-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8904DD-LF-P on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MP8904DD-LF-P reliable?
The price and inventory of MP8904DD-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8904DD-LF-P is usually 5 days.
3.What payment methods are accepted for MP8904DD-LF-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8904DD-LF-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8904DD-LF-P?
MP8904DD-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8904DD-LF-P order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MP8904DD-LF-P?
For technical support, including MP8904DD-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8904DD-LF-P requirements.
6.How does Aetrix verify that MP8904DD-LF-P is sourced from the original manufacturer or authorized distributors?
All MP8904DD-LF-P products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP8904DD-LF-P meets industry standards.
7.What is the process for return or replacement of MP8904DD-LF-P?
All MP8904DD-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP8904DD-LF-P, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MP8904DD-LF-P part is unused and in its original packaging.
Return procedure for MP8904DD-LF-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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